Air cleaner



Jama 1926.

M. ECHANDLER AIR CLEANER Filed Sept. 9. 1921 wmmm Patented Jan. 19, 1926.

rumor It; cnmmmn, or cmcaeo, more I 6 Illinois, have invented usefulImprovement in I To all-whom it concern:

Appllcation filed September Be it known that I, MILTON E. Grumman,

a citizenof the United -States,'residing at. Chicago, in the county ofCook and State of which the a certain new'and Air Cleaners, of

followin is a full, clear, 001N189,

and exact description, reference being had to the acompanying drawings,form ng a part of this speoifi cation.

My invention relates to [cleaning devices,

. and more for cleaning gases by the separation therelower edge ofcylindrical portion 22, which lip is perforated as at 28.

A lower de melt and dischar e chamber bcl w the ba e 20 is defined fromof dust and sion there specifically to an improved device ther materialin suspen- One object of my invention is to improve the functioning ofdevices'of this sort.

Another object is to simplify and cheapcn the constr Further objects andadvantages'of the inuction thereof. 1

vent-ion will become apparent-as-the description proceeds.

In the accompanying drawings:

. Figure.

1 is a sectional view of'a device constructed according to theprinciples of Fi remv'invention, and

Figure 2 is an enlarged detailed section.

3 is a fragmentary plan view rho wing the arrangement of the inletguides.

In the lccied for a cylindrical part. 12 and a conical embodiment of myinvention seillustration, the shell 10 comprises ortion 14 terminatingin a short cylindricaFlip 16 having an diaphragm or baille 2O outwardlyturned flange 18. The

comprises a cylin- Idrical portion 22 cooperatingwith part 16 to form anan-ow annular space,,and extending somewhat above the upper. end ofpart 16, crowned by a conical cap 24, the wallsof which, in thisinstance, make an angle of 60 with the axis of the cone.

outwardly turned lip 26'projects'from the y a lower she 1 comprising aconical portion 29, it cylindrical portion 30 and a final cone 32. The

upper edge of cone 29 is headed around lips 18 ,and 26 firmly together.

as at 34 to fasten all three pieces A tubular ejectoriorniedof-sheet'metal stampings tion 30 o is clamped to thecylindricalport the lower shell. This ejector.

Air or. gas enterin 4 forms a rapidly whirling bod-y -.within shellthrown to the outside a as the whirling. mass a, 1921'.-' Serial in.499,451..

comprises a lateral inlet 36 the end of which surrounds cone 32, and afdownwardly directed venturi 38, the throat of which is substantially inthe same plane as the open lower end of cone: 32.

The cylindrical portion 12 of shell 10 is surmounted b a ring 40 suporting a pluralitv of be e or inlet guides 42 ho'used within aperipheral screen 44. Guides 42 (see Figure 3) are shaped to define aplurality of tangentially directed passages enteringthe upper chamberdefined by said guides and by shell 10. The top of the chamber isdefined bycover'plate 45, sup orting a discharge tube 46, projectingbelbw the plane of inlet guides 42, and in this instance terminating inlaterally1 directed elbow.

The operation of t e between guides 42 10, whereby suspended matter ofgreater specific gravity than the body of gas is ainst walls 12, and,escends, against the inclined :wall 14. The; gas is now deflected bywalls 14 and cone 24 to form a rising column in the center of the devicewhich makes its exit through tube 46. Solid material, or any material ofgreater specific ravity than. the medium-passing through the device, isthus deposited'and finds its device is as follows:

way into the'annular space between the cylincrical-walIs 16 and 22,falling through orifices 28 into the, lower chamber.

Eiector action in venturi 38 maintains sullicientvacuum at the-openingof cone 32 to insure aconstant How of a relativel small quantit of asdownwardly through orifices28 an the ower'chamber. The materialdeposited is thus positively drawnvor throw-n downward through the lowerchambet and finally ejected.

=W'ihe'n 'the device 15 used. in connection with' an internal combustionengine, part or all of the exhaust gases are made to pass through theejector, and the'inlet of the en ine is connected to tube 46'.-

Wit-hout'further elaboratibn, the foregoing will so .fully explain the,gist of my mvention, that others may, by applying cur-.

rent knowled'ge, readily adapt the same for use under various conditionsof service,

without eliminating certain" features which as Pr y is 99 m t sentialitems of novelty involved, which items are intended to be defined andsecured tome by the following claims.

' I claim:

' 1. In a cleaner a large .shell,.a small shell,

one end of said large shell and one end of said small shell being of thesame diameter and juxtaposed, and a. battle dividing the spaceinsidesai'cl shells into two chambers in open communication with eachother, two of said members having annular lips and the third having anannular bead gripping said lips to unite all three into a rigidstructure.

2. In a cleaner, two shells having abutting ends, a ballle separatingthe space inside said'shells into two chambers in open communication, abead on one shell, and lips on the other shell and on said balllegripped by said head to hold the parts together.

3. In combination, three annular elements superposed, and a lip on oneof the elements turned over the edges of both the others to hold allthree of them securely together.

4. In a device of the kind described, a head member having an annularrow of tangential inlet openings, the head composed of two opposedmembers clamped together, and a perforate guard member arranged outsideof said inlet openings and clamped .in position between the edges of thetwo head members.

5. In a device of the kind described, a head member composed of a ringmember and an opposed coter member, the two members adapted tol'besecured in spaced relation to provide inlet passages between them, theouter edges of, said members formed to provide a circumferential shallowchannel, and a ring-like perforate guard ring held in said channel.

6. In a device of the kind described, a sheet. metal casing havingacentral opening at its lower end, the lower end of the casing formedinto an annular outwardly extending flange. a bafiie within-the outletof the casing having a similar flange, a-closure for the lower 'end ofthe casing having a restricted outlet at'itslower end and haflng its.upper edge formed around said two flanges for retaining" the threepartsin their relative position.

7. In a'device of the kind described, a sheet metal truncated done. asheet metal conical member for continuing the cone. a sheet metalpartition arranged at the juncture of the two parts ofthe cone, the twoparts having interlocked flanged edges at their adjacent edges engagingand clamping the outer edge of the partition for securing it in place.

'8. In a cleaner, a shell having an axial .outlet and a substantiallycontinuous pely, and

a narrow annular screen outside said guides to steady the flow. 9, Acleaner having, in combination, two chambers in open communication, onechamber terminating in an open frustuin of a cone with its small endoutermost, and asheet metal casing gripping the walls or said chamberadjacent the base of the cone, said casing defining a Venturi passagewith its throat adjacent to'the end of said chamber, and'a lateral inletenveloping the end portion thereof. i

10. In a device of the kind describec a sheet metal casing having areduced lower end provided with acylindrical portion, a sheet metalconnection for the lower end thereof adapted to be clamped to saidcylindrical portion and to provide a Venturi tube surrounding thedischarge opening of the casing, said connection formed witha sideopening between its endsfor receivig a pressure supply pipe, and saidconnection adapted to be clamped to said pipe.

11. A cleaner having, in combination, two chambers in opencommunication, one chamber terminating in an open frustu'm of a conewith its 'small end outermost, and a sheet metal casing fastened to saidchamber adjacent the base of the cone, said casing defining a Venturipassage with its throat adjacent the end of said chamber, and a lateralinlet enveloping the end portion of said cone.

12. .L cleaner having, in combination two chambers in opencommunication, one c amber terminating in an open frustum of a cone withits small end outermost, and a sheet metal casing fastened to saidchamber, said casing defining a Venturi passage with its throat adjacentto the end of said chamher, and an inlet enveloping the end portion ofsaid cone. i

13. A cleaner having, in combinatiom-tWo chambers in open communication,one chamber terminating in an open frustum of a cone with its small andoutermost, and a sheet metal casing fastened to said chamber, saidcasing defining a Venturi passage arranged to' draw material from theend, of saidv

